While the host does take questions from phone-in callers, all the
questions this time had come in by email in response to the
announcement of the featured guest.

There was an interesting mix: questions about protecting the lunar
environment, about lunar resources, about how tapping lunar resources
could help solve some of Earth's most stubborn problems, about
asteroid resources, about President Bush's new Moon-Mars Initiative,
about telescopes on the Moon and S.E.T.I., and about humans vs.
robots.